1949. The opening of the BBC's Midlands relay station.
Television was invented by John Logie Baird, who demonstrated his revolutionary invention for the first time in 1926.
The BBC had been established in 1922 to broadcast radio programmes, but it began experimenting with the new technology and in 1936 regular transmissions began from Alexandra Palace in London.
To begin with the two-hour daily broadcast (except Sundays) reached just 100 or so television sets in the south-east of England. The early programmes owed much to the theatre, with music and variety performances particularly popular.
However, the potential of the medium was quickly identified by both programme makers and the public. In 1937 tennis from Wimbledon was broadcast for the first time; the FA Cup and test match cricket followed in 1938. By 1939 programming had extended to 7 days per week and 23,000 licences had been bought. But on 1 September 1939 the screens went blank: Britain was at war with Germany and programming did not resume until June 1946.
When television returned it was still restricted to the relatively narrow radius of homes within reach of the transmitter. However, television began a rapid expansion after the war, commencing with the opening of the Sutton Coldfield relay station in 1949, which brought television pictures from London to the Midlands.
Images in the video include the control room at Alexandra Palace, the opening of the Sutton Coldfield transmitter and early studio scenes from BBC Lime Grove.